Goals and caps on carbon emissions are practically worthless, if coal emissions continue, because of the exceedingly long lifetime of carbon dioxide… — James Hansen Copy Share Image
We have at most ten years—not ten years to decide upon action, but ten years to alter fundamentally the trajectory of global… — James Hansen Copy Share Image
Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow… — James Hansen Copy Share Image
The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it. — James Hansen Copy Share Image
How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more… — James Hansen Copy Share Image
The climate is nearing tipping points. Changes are beginning to appear and there is a potential for explosive changes, effects that would… — James Hansen Copy Share Image
Consider the perverse effect cap and trade has on altruistic actions. Say you decide to buy a small, high-efficiency car. That reduces… — James Hansen Copy Share Image
We have at most ten years - not ten years to decide upon action, but ten years to alter fundamentally the trajectory… — James Hansen Copy Share Image
The carbon emissions from tar shale and tar sands would initiate a continual unfolding of climate disasters over the course of this… — James Hansen Copy Share Image
We have to, in the next ten years, begin to decrease the rate of carbon dioxide emissions and then flatten it out.… — James Hansen Copy Share Image
What is frustrating people, me included, is that democratic action affects elections but what we get then from political leaders is greenwash. — James Hansen Copy Share
What makes tar sands particularly odious is that the energy you get out in the end, per unit carbon dioxide, is poor. It's equivalent… — James Hansen Copy Share
We are on the precipice of climate system tipping points beyond which there is no redemption. — James Hansen Copy Share
Jail threats did not dissuade Martin Luther King - and intergenerational justice is a moral issue of comparable magnitude to civil rights. — James Hansen Copy Share
The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it. — James Hansen Copy Share
The five-year mean global temperature has been flat for the last decade, which we interpret as a combination of natural variability and a slow… — James Hansen Copy Share
Rising carbon price is essential to 'decarbonize' the economy - to remove the nation towards the era beyond fossil fuels. — James Hansen Copy Share
Policy decisions on climate change are being deliberated every day by those without full knowledge of the science, and often with intentional misinformation spawned… — James Hansen Copy Share
Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet… — James Hansen Copy Share
The most difficult task, phase-out over the next 20-25 years of coal use that does not capture COâ‚‚, is Herculean, yet feasible when compared… — James Hansen Copy Share
As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species. — James Hansen Copy Share
I think we have a very brief window of opportunity to deal with climate change... no longer than a decade, at the most. — James Hansen Copy Share
The climate system is being pushed hard enough that change will become obvious to the man in the street in the next decade. — James Hansen Copy Share
